diff --git a/frontend/src/components/shared/QuickAccessBar.css b/frontend/src/components/shared/QuickAccessBar.css
index b484132b8..b1d22fcc3 100644
--- a/frontend/src/components/shared/QuickAccessBar.css
+++ b/frontend/src/components/shared/QuickAccessBar.css
@@ -8,8 +8,8 @@
   display: flex;
   align-items: center;
   justify-content: center;
-  width: 32px;
-  height: 32px;
+  width: 2rem;
+  height: 2rem;
 }
 
 /* Action icon styles */
@@ -31,11 +31,30 @@
   z-index: 10;
 }
 
+/* Rainbow mode container */
+.quick-access-bar-main.rainbow-mode {
+  background-color: var(--bg-muted);
+  width: 5rem;
+  min-width: 5rem;
+  max-width: 5rem;
+  position: relative;
+  z-index: 10;
+}
+
 /* Header padding */
 .quick-access-header {
   padding: 1rem 0.5rem 0.5rem 0.5rem;
 }
 
+.nav-header { 
+  display: flex;
+  flex-direction: row;
+  align-items: center;
+  justify-content: center;
+  margin-bottom: 0;
+  gap: 0.5rem;
+}
+
 /* Nav header divider */
 .nav-header-divider {
   width: 3.75rem;
@@ -126,10 +145,15 @@
   font-synthesis: none;
 }
 
+/* Font size utility */
+.font-size-20 {
+  font-size: 20px;
+}
+
 /* Hide scrollbar by default, show on scroll (Webkit browsers - Chrome, Safari, Edge) */
 .quick-access-bar::-webkit-scrollbar {
-  width: 8px;
-  height: 8px;
+  width: 0.5rem;
+  height: 0.5rem;
   background: transparent;
 }
 
@@ -141,7 +165,7 @@
 
 .quick-access-bar::-webkit-scrollbar-thumb {
   background: rgba(0, 0, 0, 0.2);
-  border-radius: 4px;
+  border-radius: 0.25rem;
 }
 
 .quick-access-bar::-webkit-scrollbar-track {
@@ -152,4 +176,4 @@
 .quick-access-bar {
   scrollbar-width: auto;
   scrollbar-color: rgba(0, 0, 0, 0.2) transparent;
-} 
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/frontend/src/components/shared/QuickAccessBar.tsx b/frontend/src/components/shared/QuickAccessBar.tsx
index 196fa01bb..8bd4b7a6d 100644
--- a/frontend/src/components/shared/QuickAccessBar.tsx
+++ b/frontend/src/components/shared/QuickAccessBar.tsx
@@ -45,7 +45,7 @@ function NavHeader({
 }) {
   return (
     <>
-      <div className="flex flex-row items-center justify-center mb-0" style={{ gap: '0.5rem' }}>
+      <div className="nav-header">
         <Tooltip label="User Profile" position="right">
           <ActionIcon
             size="md"
@@ -90,7 +90,7 @@ function NavHeader({
             className={activeButton === 'tools' ? 'activeIconScale' : ''}
           >
             <span className="iconContainer">
-              <AppsIcon sx={{ fontSize: 26 }} />
+              <AppsIcon sx={{ fontSize: "1.75rem" }} />
             </span>
           </ActionIcon>
           <span className={`all-tools-text ${activeButton === 'tools' ? 'active' : 'inactive'}`}>
@@ -120,7 +120,7 @@ const QuickAccessBar = ({
     {
       id: 'read',
       name: 'Read',
-      icon: <MenuBookIcon sx={{ fontSize: 20 }} />,
+      icon: <MenuBookIcon sx={{ fontSize: "1.5rem" }} />,
       tooltip: 'Read documents',
       size: 'lg',
       isRound: false,
@@ -133,7 +133,7 @@ const QuickAccessBar = ({
       id: 'sign',
       name: 'Sign',
       icon: 
-      <span className="material-symbols-rounded" style={{ fontSize: 20 }}>
+      <span className="material-symbols-rounded font-size-20">
         signature
       </span>,
       tooltip: 'Sign your document',
@@ -144,7 +144,7 @@ const QuickAccessBar = ({
     {
       id: 'automate',
       name: 'Automate',
-      icon: <AutoAwesomeIcon sx={{ fontSize: 20 }} />,
+      icon: <AutoAwesomeIcon sx={{ fontSize: "1.5rem" }} />,
       tooltip: 'Automate workflows',
       size: 'lg',
       isRound: false,
@@ -153,7 +153,7 @@ const QuickAccessBar = ({
     {
       id: 'files',
       name: 'Files',
-      icon: <FolderIcon sx={{ fontSize: 20 }} />,
+      icon: <FolderIcon sx={{ fontSize: "1.5rem" }} />,
       tooltip: 'Manage files',
       isRound: true,
       size: 'lg',
@@ -163,7 +163,7 @@ const QuickAccessBar = ({
       id: 'activity',
       name: 'Activity',
       icon: 
-      <span className="material-symbols-rounded" style={{ fontSize: 20 }}>
+      <span className="material-symbols-rounded font-size-20">
       vital_signs
       </span>,
       tooltip: 'View activity and analytics',
@@ -174,7 +174,7 @@ const QuickAccessBar = ({
     {
       id: 'config',
       name: 'Config',
-      icon: <SettingsIcon sx={{ fontSize: 16 }} />,
+      icon: <SettingsIcon sx={{ fontSize: "1rem" }} />,
       tooltip: 'Configure settings',
       size: 'lg',
       onClick: () => {
@@ -213,7 +213,7 @@ const QuickAccessBar = ({
 
   return (
     <div
-      className={`h-screen flex flex-col w-20 quick-access-bar-main ${isRainbowMode ? rainbowStyles.rainbowPaper : ''}`}
+      className={`h-screen flex flex-col w-20 quick-access-bar-main ${isRainbowMode ? 'rainbow-mode' : ''}`}
     >
       {/* Fixed header outside scrollable area */}
       <div className="quick-access-header">
@@ -297,7 +297,7 @@ const QuickAccessBar = ({
                 }}
               >
                 <span className="iconContainer">
-                  <SettingsIcon sx={{ fontSize: 16 }} />
+                  <SettingsIcon sx={{ fontSize: "1rem" }} />
                 </span>
               </ActionIcon>
               <span className="config-button-text">